Pickering, I. J., Wright, C., Bubner, B., Ellis, D., Persans, M. W., Yu, E. Y., . . . Salt, D. E. (2003). Chemical Form and Distribution of Selenium and Sulfur in the Selenium Hyperaccumulator Astragalus bisulcatus. American Society of Plant Biologists.

Pickering, Ingrid J., Carrie Wright, Ben Bubner, Danielle Ellis, Michael W. Persans, Eileen Y. Yu, Graham N. George, Roger C. Prince, i David E. Salt. Chemical Form and Distribution of Selenium and Sulfur in the Selenium Hyperaccumulator Astragalus Bisulcatus. American Society of Plant Biologists, 2003.

Pickering, Ingrid J., et al. Chemical Form and Distribution of Selenium and Sulfur in the Selenium Hyperaccumulator Astragalus Bisulcatus. American Society of Plant Biologists, 2003.